Dec 15 – 16, 2020
Centre for Particle Theory, Durham
Europe/London timezone

Charting the Fifth Force Landscape

Dec 16, 2020, 4:00 PM
Teams (Centre for Particle Theory, Durham)


Centre for Particle Theory, Durham

IPPP & Dept. Mathematical Sciences Durham University South Road Durham DH1 3LE


Hannah Banks (University of Cambridge)


In recent years particle physics research has undergone somewhat of a phase transition, looking increasingly towards hidden sectors and the feebly interacting frontier. In this talk I will introduce a new approach to parameterising dark sector forces, underpinned by the Källén-Lehman representation, in which the effects of any general scalar fifth force are captured by a single positive-definite spectral function. Using this language, I will demonstrate how the effects of loop-level forces can be simply obtained, without needing to explicitly perform loop calculations. I will also show how experimental observables can be expressed in completely general terms, facilitating the straightforward extraction of limits to any specific model. Finally, I will discuss how this framework opens the possibility to speculatively probe violations of unitarity, causality or locality within hidden sectors.

Length of talk 15-25 minutes
Would you be interested in receiving feedback on your talk? Yes
Will you be pre-recording your talk? No
Are you happy for your talk to be recorded? Yes

Primary author

Hannah Banks (University of Cambridge)

Presentation materials